Lighten our darkness, we beseech Thee, O Lord;
and by Thy great mercy defend us from all perils and dangers of this night;
for the love of Thy only Son, our Saviour, Jesus Christ.
Be present, O merciful God,
and protect us through the silent hours of this night,
so that we, who are wearied by the changes and chances of this fleeting world,
may repose upon thy eternal changelessness; through Jesus Christ our Lord.
The first prayer is the third collect from the Order for Evening Prayer in the Book of Common Prayer. The second prayer is also sometimes used at Evening Prayer, and can be found here.